Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Rod – strand – filament or fiber
Reexamination Certificate
2007-08-22
2009-11-17
Torres-Velazquez, Norca L (Department: 1794)
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Rod, strand, filament or fiber
C428S365000, C428S920000, C428S921000, C442S136000, C442S181000, C442S302000
Reexamination Certificate
active
07618707
ABSTRACT:
This invention relates to a flame-resistant spun staple yarns and fabrics and garments comprising these yarns and methods of making the same. The yarns have 50 to 95 parts by weight of a polymeric staple fiber containing a structure derived from a monomer selected from the group consisting of 4,4′diaminodiphenyl sulfone, 3,3′diaminodiphenyl sulfone, and mixtures thereof; and 5 to 50 parts by weight of a polyoxadiazole fiber or greater, based on the total amount of the polymeric fiber and the polyoxadiazole fiber in the yarn.
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Gabara Vlodek
Zhu Reiyao
E.I. du Pont de Nemours and Company
Torres-Velazquez Norca L
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